3D printed RC truck V3: Single rear axle(Single wheels setup)

by MrCrankyface, published

3D printed RC truck V3: Single rear axle(Single wheels setup) by MrCrankyface Jul 16, 2016
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Second version of the rear axle, this one is a bit wider to work with single-tyre rims.

You can check out the assembly video for this over at my youtube

Note the x at the end of some filenames, that indicates how many you need of it.

Hardware needed:
7x M3x10
7x M3 nuts
4x Counter-sunk M3 screws
4x M3x16
1x 4mm rod, 18mm long
6x 6700ZZ or equivalent bearing(15x10x4mm)

2016-07-17 Edit: Added a second rim design named Rear_driven_single2.

For more V3 parts, check out my V3 collection:

Check me out at:
Youtube: http://www.youtube.com/c/MrCrankyfaceProjects
Instagram: https://www.instagram.com/mr.crankyface/
3d hubs: https://www.3dhubs.com/malm%C3%B6/hubs/mrcrankyface
Patreon: http://patreon.com/Mrcrankyface

Print Settings


The Frankenstein










Everything should be printable without support. I recommend 30-50% infill for the smaller parts and the axle housing.

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Could you please make a 20 cm wide version with the lower Control arm mountig points more outside

What are the dimensions of the axle slots on the tires??? I am making my own rims to use for something similar that I am designing for my robotics class. I am making rims that bolt onto hubs which are attached to the axle so I can change the rims similar to a full-size car.

are you ok with me repurposing your design for a sumobot?

Sounds awesome, go for it!

thanks! I'll be sure to post pictures of the build

Hi, thanks for the many work that you have done! It would be great if you have this axle with a second output for a 6x6 or 8x8 truck. Would it be possible:)??

Thanks! I have experimented with designing a 6x6/8x8 before but the current axles won't work. The joints are too long and makes it look really awkward, you get almost a full tire width between the axles/wheels because the axles themself are so long.
In the future I hope to be able to spend some weeks on completely redesigning more compact axles and gears.

hi there ! It's my 3rd time printing the Axle-rear-bottom-single and axle-rear-top-single and with the bearings in it does not close :S what can i do ? which slicer do you use ? Yesterday i tried with pla and it wasn't better than when i tried with Abs. The bearing won't go halfway in.

Sounds like you need to first check if your printer is being accurate. Print a test cube and make sure it's exactly the right size.
This truck requires very high precision to come out good. :)

You can try printing them larger. My advice is making the male end about .02 smaller than the female. If you have a way to measure the bearings, over size both accordingly. Also try a Dremel. Hope this helps, smokin0137

where are the tires

thank you so much, I thought I was going to have to find tires for the rim

is this a locked or unlocked diff?

Open/unlocked differential.

Hi. I printed all piezes of the rear axle but i have a lot of problems to fit some male pieces in respective female pieces. You understand me? What can I do? Thanks for all!


Either re-calibrate your extrusion(sounds like you've extruded too much plastic) or use a file to carefully remove material until they fit. :)